Ventilator



Jan. 1, 1929. 1,697,389

, A. GERLACH VENTTLATOR Fi ed July 5, 1927 Original/via;

51/6 72 far fil xa. hder er/a'cA Patented Jan. 1, 1929.

UNITE STS OF OBERSCHMITT, GERMANY.

VENTILATOR..

' Original application filed July 5, 1927, Serial No. 203,325, and r and this application filed May 26, 1928. Serial No. 280,910;

The present application is a division of my prior application Serial No. 203,325, filed July 5, 1927, and has reference to a ventilating device for buildings of the kind composed of a frame having an outlet opening for foul air and an inlet opening for fresh air.

The object of the present invention is to provide a novel form, construction and arrangement of parts for securing a thorough discharge of foul air and supply of fresh air without producing a noticeable draft, while at the same time obtaining the admixture of a desirable proportion of warm air with the indrawn cooler air in order to prevent undue reduction of temperature of the room in which the ventilator is arranged.

The invention consists of the features of construction, combination and arrangement of parts, hereinafter fully described and claimed, reference being had to the accompanying drawing, in which Fig. 1 is a front elevation of the improved ventilator.

Fig. 2 is a vertical front-to-rear section on line 2-2 of Fig. 1.

Fig. 3 is a horizontal section on line 33 of Fig. 1.

Fig. 4 is a perspective view of the ventilator.

Fig. 5 is a similar view of a modified form of ventilator.

The ventilator comprises a box-like frame or casing a, of rectangular, oblong rectangular or other suitable form, open at front and rear and designed to be mounted in the wallof a room near the ceiling.

The casing is subdivided by a partition 0 into an upper foul air exhaust openlng (Z and a lower fresh air inlet opening 6. The partition 0 comprises two vertically disposed triangular shaped plates secured at their vertices to the rear of the casing adjacent to the side walls thereof and thence extending forwardly in converging relation and having their basal edges abutting and united at the front of the casing. These plates form with the sides of the casing vertical channels it extending between the openings cl and 6 whereby more or less of the outflowing warm air may mix with the inflowing cool air, to temper the latter to a desirable degree with out interefering with the exhaust of the major proportion of the foul air or the free introduction of cool air. A grid i at ithe front of the casing prevents the passage of SOllCl particles into or through the ventilator.

in Germany February 24, 1927. Divided Arranged at the upper front portion of the casing is a hood or wind-shield 9 con-' sisting of an upper outwardly and downwardly sloping plate and a lower downwardly and inwardly sloping plate intersecting at their adjacent edges and forming triangular lateral passages f, above which and supported by the upper plate is a downdraft triangular passage f, through which passages the foul air is drawn off from the room and into the opening (Z for discharge. The hood or wind-shield acts as a windbreak to prevent the too rapid exhaust of warm air and by its air checking action to facilitate the admixture in the channels of a due proportion of warm air with the entering cool air. Efficient ventilation of a room without producing an objectionable draft and without objectionably lowering the temperature of the room is thus assured.

In the modification shown in Fig. 5 there is provided, besides the upper hood g, an inverted V-shaped lower hood comprising plates 70 and which overhangs the front of the opening below the hood 9 and acts as a baflie to prevent warm air from being drawn directly down into the cold air opening e and cold air from being sucked up into the foul air opening 61, so that undesirable commingling of the air currents will be prevented. This hood may, however, be provided with small openings on to allow currents of cold air to be drawn upward by suction and to promote the mixture of such currents of cold air with the warmer air in the upper part of the room.

Having thus described my invention, I claim 1. A ventilator comprising a casing open at front and rear, a V-shaped partition in said casing subdividing the same toform a lower cold air inlet, an upper warm air outlet and connecting passages between the same, and a hood at the upper front portion of the casing constructed to provide channels communicating with said warm air outlet.

2. A ventilator comprising a casing open at front and rear, a V-shaped partition in said casing subdividing the same to form a lower'cold air inlet, an upper warm air out m at let and connecting passages between the same, a wind-shield at the upper front portion of the casing consisting of angularly related upper and lower plates forming lateral 5 air passages communicating with the warm air outlet, and a downdraft passage extending through the upper plate and co1nn1uni- "eating with the warm air passage.

3. A ventilator comprising a casing open front and rear, a partition in said casing subdividing the same into a lower cold air inlet and an upper warm air outlet, a wind shield at the upper front portion of the easing providing passages communicating with '15 the warm air outlet, and an inverted V- shaped hood below said wind-shield overa 4. A ventilator of the type described in claim 1 wherein the V-shaped partition consists of two triangular plates having their vertices secured at the rear of the casing adjacent to the side walls thereof, said plates extending forwardly in converging relation and having their basal edges intersecting and united at the front of the casing.

In testimony whereof I have aflixed my signature.

ALEXANDER GERLACH. 

